Please help - Arguments and ROCD - please help

I’ve been with my boyfriend for 3 years and he is an absolute angel. All throughout the relationship I would have nightmares and intrusive thoughts “what if he leaves/cheats”. And he would reassure me and treat me like the world revolves around me. Lately I’m realizing this was actually ocd and not anxiety as I had previously thought. I would get paranoid if he didn’t check his messages for a couple hours, I’d get anxious if I saw an ambulance heading toward his street while I was driving, I would ask for reassurance that he loved me constantly. Bear in mind, I have no reason to have these fears. My boyfriend is my best friend and has supported me through thick and thin and he’s amazing. One time a couple months ago I was being a bit snappy with him one night and I had the thought “only people who don’t like their partners are snappy with them” and it just stuck. Now I struggle with intrusive thoughts about my own feelings, do I love him, do I miss him enough, is my relationship going to end because this couple on social media broke up. I could deal with the thoughts about his feelings because he is so so good about making me feel loved but now I’m stuck in this constant guilt loop where I question my relationship for no reason then get anxious and feel guilty for even thinking that way because I think I’m manifesting it. Was wondering if anybody else in a healthy long term relationship has had this happen to them and how you talk yourself down :(

I continue to get distressing thoughts surrounding my love for my boyfriend and if we are going to work out and are meant to be together because he is of different religious beliefs, and I grew up hearing that doesn’t work in relationships. We have been together nearly two years. I know I love him, and he supports my beliefs and I support him, we have had conversations about it. but my brain goes through intense periods of hyper focusing on the anxiety surrounding it, making me feel like I am going to hurt him, or we are going to break up because of me and our differences. It’s very distressing and I ruminate a lot about him and try to calm myself down by thinking through the situation, a mental compulsion? I know worrying about your partner is normal but I feel like I hyper fixate on the compatability between us and me hurting him and I don’t know if it’s ROCD or if it means we aren’t compatible. It’s upsetting.

Does anyone else’s OCD take things and run with them? For example, my boyfriend got annoyed with me recently and responded kind of rudely to a question I asked him. I told him that wasn’t fair and he agreed and apologized immediately. But now I keep ruminating on it that maybe this is just him revealing his true self now that we’ve been together for a while. Maybe the real him is aggressive and he’s going to snap at me in the future and I’m going to be stuck in a relationship that is unhealthy! Also I’m fearing everyone reading this won’t believe me that my relationship is good and they’ll be judging me saying it’s not OCD. Struggling right now.